Exclusive: Giancarlo Esposito Returning to Once Upon a Time

Giancarlo Esposito is set to reprise his role as Sidney Glass, otherwise known as the Magic Mirror, in the Season 4 premiere, TVGuide.com has learned exclusively.

Details on the return of the intrepid Storybrooke reporter are being kept under wraps, though the last time viewers saw anything of Sidney Glass, it was on the nameplate of a locked door in the deep recesses of Storybrooke hospital.